After Carroll, 1988, Long, 1995, and Blom, Clack, Ahlberg & Friedman, 2007

Famil y-level taxonomy of all dipnomorphs

<==o †Porolepiformes Jarvik, 1942
   |--o †Porolepidae
   |  |-- †Heimenia ensis Ørvik, 1969; E.-M.Dev. Spits. EAs.
   |  `--o †Porolepis [Gyrolepis] L.-M. Dev. Eu. Spitz. NAs.
   |     |-- †P. brevis Jarvik 1937
   |     |-- †P. elongata Jarvik 1937
   |     |-- †P. posnaniensis (Kade 1858)
   |     |-- †P. siegenensis Gross 1935
   |     `-- †P. spitsbergensis Jarvik 1937
   `--o †Holoptychioidea Owen, 1860 sensu
      `--o †Holoptychidae Owen, 1860
         |?- †Ventalepis ketleriensis Schultze, 1980
         |?- †Duffichthys mirabilis Ahlberg 1992
         |--+?- †Quebecius quebecensis Whiteaves, 1889 [Quebecius quebecius; Quebecius williamsi Schultze 1973] U. Dev. ENA.
         |  `--o †Glyptolepis [?Hamodus; Plyphlepis; ?Sclerolepis] M.Dev. Spits.Gr. M.-L.Dev. Eu.
         |     |-- †G. leptopterus Agassiz, 1844
         |     |-- †G. groenlandica Jarvik, 1972
         |     |-- †G. baltica Gross
         |     `-- †G. paucidens
         |--o †Holoptychius Agassiz, 1839 [?Apedodus; ?Apendulus; ?Dendrodus; Holoptychus (lapsus calami?); Lamnodus] M.Dev. Carb. Eu. NAs. NAm. Gr. Aust. Ant.
         |  |-- †H. americanus Leidy, 1843
         |  |-- †H. flemingi Agassiz, 1844
         |  |-- †H. giganteus Agassiz 1839
         |  |-- †H. halli Newberry, 1889
         |  |-- †H. hopkinsii M'Coy, 1844
         |  |-- †H. nobilissimus (Agassiz, 1835) [type]
         |  `-- †H. quebecensis [=? Quebecius quebecensis Whiteaves, 1889]
         |--o †Laccognathus Gross, 1941; L.Dev. EEu. Gr.
         |  |-- †L. panderi Gross, 1941
         |  |-- †L. grossi Vorobyeva, 2006
         |  |-- †L. embryi Downs, Daeschler, Jenkins, & Shubin, 2011 [Laccognathus sp. Daeschler et al., 2003, 2005; Laccognathus sp. Vorobyeva, 2006; Laccognathus sp. Downs et al., 2007]
         |  `?- †L. sp.(2) (Vorobyeva, 2006)
         `-- †Pseudosauripterus anglicus (Woodward 1891)

Reference(s):